Produção de mudas de Enterolobium contortisiliquum (Vell.) Morong em diferentes volumes de tubetes

Abstract

The Enterolobium contortisiloquum (Vell.) Morong, also known as tamboril, orelha-de-negro, orelha-de-macaco, timburi, timbaúva, tambori, among others, belongs to family Leguminosae-Mimosoideae. The study aimed to evaluate the development of tamboril seedlings grown in different volumes of tubes. The experiment was conducted in the nursery of forest seedlings in the experimental field of the Center for Agricultural, Environmental and Biological Sciences, Federal University of Bahia Recôncavo, in a completely randomized design, consisting of the tamboril species and three treatments, with tubes different volumes (55, 180 and 280 cc). Height, the diameter of the seedlings in the nursery level, deformation of roots, dry weight of the dry matter of shoot and root and leaf number, the variables were analyzed. Data were subjected to analysis of variance (α = 0.05), qualitative factors were compared by Tukey test and the increments of height and diameter was employed to analyze sequential regression. In tubes of 180 and 280 cc angler seedlings had higher mean values for all variables. The cartridge 55 cc showed the highest percentage of deformations. The seedlings grown in tubes of larger volumes (180 and 280 cc) present conditions for planting at 90 days and produced in lower volume (55 cc) at 120 days. Thus, the 180 cc cartridge for the production of seedlings of this species, which provide affordable anger for the production of seedlings conditions, as well as decreased production cycle, smaller amount of substrate and space reduction may be indicated in the nursery.